Oracle changed the license for her Java implementation which doesn't allow distribution anymore. So debian isn't allowed anymore to provide packages for it - even in non-free. (The same is true for all other distributions - just in case)

See for a "workaround", but make sure to bash Google really really hard if they still insist on sun-java6 as this just doesn't scale anymore… (if we assume good faith, Oracle changed license also to softly force the adoption of openjdk7 …)
http://sylvestre.ledru.info/blog/sylves ... _sun_java6

_________________MfG. DonKult
"I never make stupid mistakes. Only very, very clever ones." ~ The Doctor